Parameterized Design And Dynamic Analysis System Development Of Telescopic Arm Of Straight-arm Building Maintenance Unit

Building maintenance unit are high-altitude operation equipment used for maintenance and cleaning of exterior walls of high-rise buildings.The design quality and dynamic performance of its telescopic arm are directly related to the personal safety of operators.In this paper,on the VS platform,with the help of C# language,through the secondary development of Solid Works and Adams,a parametric design and dynamics analysis system of the Building maintenance unit is developed to realize the parametric design and dynamics analysis of the telescopic arm.The main research contents of this topic are as follows:(1)Calculation of the length of the telescopic arm: First,determine the working length boundary of each plan according to the four different balance arm connection plans of the independent telescopic telescopic arm,and draw a length plan diagram of the maximum working length and the length of the balance arm.The customer can Choose an ideal solution quickly based on the parameters.Subsequently,three cutting principles were formulated,and the arm length calculation methods of the four connection schemes were determined according to different length requirements.The strokes of the synchronously telescopic arms at all levels are the same.According to different needs,they are divided into five schemes for discussion,and a length scheme diagram of the maximum working length and the minimum working length is made.(2)Telescopic arm structure design and parametric design system development: First,four incremental socketing schemes were determined.According to these four socketing schemes,a total of 15 specific scheme drawings were combined,and various parts were counted.The size and position relationship between the components are calculated through the program in the parametric design.Finally,the structural design of the arm and telescopic arm assembly at all levels was completed in the parts design and the whole machine design system.By creating a part engineering drawing template and linking it with the corresponding three-dimensional model,the parameterization of the parts was realized.Engineering drawings are automatically output.(3)Development of parametric dynamics analysis system: By editing Adams background command file in C# language,the secondary development of Adams can be realized,and the development of parametric dynamics analysis system of window cleaner can be further realized.The achievable functions of the system are mainly two points: one is to complete the reassembly of the model;the other is the call of Adams,the setting of simulation parameters and the postsimulation processing.Through demand analysis,a simple and visual analysis interface is built,so that analysts can quickly become familiar with the operation process of the system.Finally,the independent telescopic telescopic boom designed in this subject is used as an example to verify the system.